CVE-2026-83163 in Application Object Library
Summary
by MITRE • 09/16/2026
Vulnerability in the Oracle Application Object Library product of Oracle E-Business Suite (component: Attachments / File Upload). Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Application Object Library. Successful attacks of this vulnerability can result in takeover of Oracle Application Object Library. CVSS 3.1 Base Score 8.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
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Analysis
by VulDB Data Team • 09/16/2026
The identified vulnerability resides within the Oracle Application Object Library component of Oracle E-Business Suite, specifically affecting the Attachments and File Upload functionality across supported versions ranging from 12.2.3 to 12.2.15. This security flaw represents a critical weakness in how the application processes user-supplied data during file upload operations. The vulnerability is classified as easily exploitable because it requires no interaction with the victim other than network access and does not necessitate any form of user interface manipulation or social engineering, such as clicking on malicious links. Instead, an attacker can directly target the HTTP endpoints associated with the attachment handling mechanisms to trigger the flaw.
From a technical perspective, this vulnerability allows for unauthorized code execution or system compromise due to insufficient validation or sanitization of uploaded files and their metadata. The core issue likely stems from improper handling of file types, path traversal sequences, or malicious payloads embedded within seemingly legitimate documents. When an attacker submits a crafted request via HTTP containing specially constructed data, the Oracle Application Object Library fails to adequately verify the integrity or safety of the input before processing it. This lack of rigorous validation enables the execution of arbitrary commands or scripts on the underlying server infrastructure where the E-Business Suite is hosted. The severity of this flaw is underscored by its high CVSS 3.1 Base Score of 8.8, indicating a critical level of risk that significantly impacts confidentiality, integrity, and availability.
The operational impact of exploiting this vulnerability is severe, leading to complete takeover of the Oracle Application Object Library service. Once an attacker gains control over this component, they effectively achieve unauthorized administrative access within the E-Business Suite environment. This compromise allows for extensive data exfiltration, modification of critical business records, and potential lateral movement across the internal network. The high availability impact means that attackers can also disrupt services by causing denial-of-service conditions through resource exhaustion or system instability resulting from malicious file processing. Consequently, organizations relying on Oracle E-Business Suite face significant risks to their operational continuity and data security posture if this vulnerability remains unpatched.
In terms of industry standard classifications, this vulnerability aligns with CWE-434, which describes the Unrestricted Upload of File with Dangerous Type, as well as potential aspects of CWE-20 for Improper Input Validation depending on the specific mechanism exploited. Furthermore, from a tactical standpoint relevant to threat intelligence frameworks like MITRE ATT&CK, exploitation of this flaw facilitates Initial Access via Web Applications and potentially Execution through Command and Scripting Interpreter if arbitrary code execution is achieved. The attack vector corresponds to Network (AV:N) with Low Complexity (AC:L), requiring Low Privileges (PR:L) and No User Interaction (UI:N), which classifies it as a high-risk remote vulnerability that does not rely on user error for exploitation.
To mitigate this risk, immediate action must be taken by applying the latest security patches provided by Oracle for the affected versions of E-Business Suite. Organizations should ensure their patching cycles are up to date and verify that all instances running version 12.2.3 through 12.2.15 have received the relevant updates addressing this specific attachment handling flaw. In addition to patching, implementing strict web application firewall rules can help detect and block malicious file upload attempts characterized by unusual content types or encoded payloads in HTTP requests. Network segmentation should also be reviewed to ensure that the E-Business Suite servers are not directly exposed to untrusted networks without appropriate access controls and monitoring mechanisms in place to identify anomalous activity indicative of exploitation attempts.